# Uncoupling

Category: Metabolism

In cellular respiration, oxidation of "fuel" in the mitochondrion is coupled to the phosphorylation of ADP, forming ATP.

11 passages · 1 author · 2007–2022 · Most-cited: [Ray Peat](https://bioenergeticoracle.com/md/voices/ray-peat/index.md)

Canonical page: https://bioenergeticoracle.com/concepts/uncoupling

## Synthesis

**Uncoupling** is the process in cellular respiration where the oxidation of fuel in the mitochondrion is allowed to proceed without producing the usual amount of ATP. [Source 1, 7] Peat argued that a *mild degree of uncoupling* is profoundly protective, as it prevents the production of **stray free radical products** that occur in a more relaxed, lower-intensity mitochondrial state. [Source 2, 8] This mechanism means that by pulling fuel through the oxidation process so rapidly, none of it goes astray in random, damaging oxidation. [Source 6] Consequently, uncoupling tends to reduce **lipid peroxidation** and protects the mitochondrion from free radical damage. [Source 3, 8]

Several substances and physiological states achieve this protective uncoupling. Peat identified **fructose** as an uncoupler that absorbs excess phosphate ions, which lowers ATP slightly but greatly protects the mitochondrion, partly by reactivating the crucial enzyme pyruvate dehydrogenase. [Source 2, 8] He also noted that the **uncoupling proteins** in mitochondria, which are activated by the calcium in milk, burn calories faster while simultaneously protecting against free-radical oxidation, a mechanism associated with increased longevity. [Source 6] A temporary increase in thyroid hormone can also uncouple mitochondria, shifting the ratio towards carbon dioxide from lactate, a state Peat described as keeping the body temperature at an efficient high level that makes all tissues more stable and is fully compatible with thyroid function. [Source 2, 5]

The physiological benefits of uncoupling extend to immune function and systemic stability. Peat explained that when a cell is uncoupled and mitochondrial oxidation increases, **iron** becomes safely put into its storage form, the *ferric oxidized form*, preventing the creation of powerful free radicals like the hydroxyl radical. [Source 11] This more thorough oxidation does something to the immune system that resists infectious organisms and can even lead to the rejection of disseminated cancer cells. [Source 4, 11] Furthermore, the increased production of **carbon dioxide** that results from uncoupling is a key protective factor, as it regulates the movement of positively charged ions like sodium and calcium, protecting against their excitotoxic effects. [Source 9, 10]

Peat contrasted the protective, mild uncoupling achieved through substances like thyroid, fructose, and the body's own quinone system with the dangerous effects of potent chemical uncouplers like **dinitrophenol (DNP)**. [Source 4, 7] While DNP illustrates the principle that running the oxidative system more intensely can enhance immunity and burn fat, its nitro group makes it much more toxic and risky than the body's natural systems. [Source 4, 11] In contrast, progesterone was described as tending to stabilize the mitochondria in an efficient, well-coupled condition, reducing energy loss rather than acting as a primary uncoupler, while still achieving thermogenic effects by preventing mitochondrial bypass and reducing nitric oxide. [Source 5]

## People also ask

### How does mild uncoupling protect mitochondria from damage?

Peat argued that mild uncoupling pulls fuel through oxidation so rapidly that it prevents the formation of stray free radicals, thereby reducing lipid peroxidation and shielding the mitochondrion from oxidative damage.

### Why did Peat consider fructose to be a protective uncoupler?

Peat identified fructose as an uncoupler that absorbs excess phosphate ions, which slightly lowers ATP but reactivates the enzyme pyruvate dehydrogenase, greatly protecting the mitochondrion.

### How does the effect of progesterone differ from uncoupling in Peat's view?

The corpus describes progesterone as tending to stabilize mitochondria in an efficient, well-coupled condition that reduces energy loss, rather than acting as a primary uncoupler, while still achieving thermogenic effects by preventing mitochondrial bypass.

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## Cited passages

Passage numbers match the `[Source N]` markers in the synthesis above.

### Source 1 — Glossary

Ray Peat · Glossary

> Uncoupling
>
> In cellular respiration, oxidation of "fuel" in the mitochondrion is coupled to the phosphorylation of ADP, forming ATP.
>
> Uncouplers are chemicals that allow oxidation to proceed without producing the usual amount of ATP.

### Source 2 — Diabetes II and How to Restore and Protect Nerves KMUD 2014

Ray Peat · Interview · 2014 · https://www.youtube.com/watch?v=Lj4ewp2YH1k

> **Caller:** OK (I guess I’ll listen to that one more time on the radio). So basically, this process of producing heat, does that, in any way, negatively affect the thyroid? Isn’t thyroid supposed to generate heat in the body? This uncoupling that generates heat, does it harm the thyroid?
>
> **Ray Peat:** It increases heat among other things, and keeping your body temperature up to an efficient high level makes all of your tissues more stable.
>
> **Caller:** So, it doesn’t harm the thyroid in any way, this process of uncoupling?
>
> **Ray Peat:** No, the thyroid is very compatible with that; keeping yourself slightly hyperthyroid doesn’t stress anything, and it keeps down those stress signals.
>
> **Caller:** Dr Peat, you mentioned earlier about using niacinamide, and I was wondering if there’s a minimum dose, a range and an upper limit for people to try it.
>
> **Ray Peat:** I’ve seen really great results from something in the range of 150 to 300 mg per day divided into 3 smaller doses. But I also know people who have taken over 1000, 1500 mg for a very long time and haven’t had problems. But, mainly because of all of the manufactured supplements are gonna have trace allergenic impurities, I think it’s best to find the smallest amount that works for you.

### Source 3 — Ray Peat Email Advice Depository — Post 775

Ray Peat · Email · Feb 27, 2022

> **Question:** I think when you increase uncoupling of oxidation and phosphorylation you increase fatty acid oxidation in the liver. Do you think there's an increased need for vitamin E in such a scenario?
>
> **Ray Peat:** Uncoupling itself tends to reduce lipid peroxidation.

### Source 4 — Mitochondria, Immunity, and Natural Resistance - Ask Your Herb Doctor - May 2021

Ray Peat · Interview · May 20, 2021

> ## Mitochondrial Oxidation and Plant Pigments
>
> **Ray Peat:** Lapacho was one that he was interested in because of its color. And this turns out to be an analog of our own quinone system, the Coenzyme Q10 system, which is also very closely related to the vitamin K structure and the natural anti-inflammatory antibiotics, tetracyclines. They have a very intense system of conjugated double bonds analogous to these other natural activators of respiration. They happen to, in general, activate the production of energy as well as increase the consumption of oxygen. But during the same period, going back about 70 or 80 years, it was known that anything that uncoupled—reduced the efficiency of energy production in the form of ATP—would make the oxygen system of the mitochondrion run faster and create a more oxidized state of the cell. This principle was used in diet pills because it would make you burn up fat quickly. But it was also found to intensify immunity in the sense of being able to detect and throw off cancer cells that were disseminated but not yet forming tumors. When you made the cells oxidize probably about 50 to 100% more intensely than normal by using this uncoupling chemical, the cancer cells would be attacked by the rest of the body, flare up, be thrown off, and fail to go ahead and produce a deadly cancer.

### Source 5 — #58: Bioenergetic Nutrition Continued  |  Authoritarianism  |  Intention and Learning with Ray Peat, PhD

Ray Peat · Interview · May 30, 2021

> ## Progesterone and Thyroid
>
> **Ray Peat:** You can uncouple the mitochondria by increasing your thyroid temporarily to shift the ratio towards carbon dioxide from lactate. Progesterone tends to stabilize the mitochondria in an efficient, well-coupled condition. To get rid of moles or skin cancers, a temporary overdose of thyroid hormone works. I've seen fairly large uterine fibroids shrink when someone was willing to stay slightly hyperthyroid, keeping a resting pulse around 110 for three months.
>
> **Georgi Dinkov:** I thought that progesterone is thermogenic. Wouldn't that imply that it also uncouples to a degree?
>
> **Ray Peat:** I think it achieves it by reducing loss as much as by maintaining, preventing the bypass of the mitochondria. It keeps the mitochondria going efficiently, but at the same time, it's reducing nitric oxide in the skin and preventing unwanted heat loss.

### Source 6 — Ray Peat Email Advice Depository — Post 953

Ray Peat · Email · Dec 28, 2022

> **Question:** [Milk as a Reducing Food: Calcium, Uncoupling Proteins, and Fatty Acid Synthase]
>
> **Ray Peat:** One of the reasons a lot of people give, if they have overcome the idea that milk forms mucous, or is a risk for diseases and so on; one of their arguments is that it makes them fat. But, all the research on animals, and as far as it goes, human research, shows that milk is probably the best reducing foods there is. The mechanisms for that are now known. Not only the anti-stress effects of casein, and a good balance of saturated fats and so on, but the calcium alone is very important metabolic regulator, that it happens to inhibit the fat-forming enzymes fatty acid synthase, and incidentally that's a characteristic enzyme that goes wild in cancer. But calcium and milk inhibit that fatty acid synthase, reducing the formation of fats and at the same time it activates the uncoupling proteins in the mitochondria, which are associated with increased longevity. Because they, by increasing the metabolic rate, the uncoupling proteins burn calories faster but they protect against free-radical oxidation. That they pull the fuel through the oxidation process so fast in effect, that none of it goes astray in random oxidation, where if you inhibit your energy producing enzymes you tend to get random, stray oxidation that damage the mitochondria. So the uncoupling proteins burn calories faster, at the same time that your reducing fat synthesis and milk is, as far as I know, they only food does both of those things simultaneously.

### Source 7 — Fatigue, Aging, and Recuperation

Ray Peat · Article · 2013

> # Fatigue, Aging, and Recuperation
>
> *Ray Peat's Newsletter, 2013*
>
> - Old people and sick people tire easily. Surprisingly, little is known to explain that common fact.
>
> - Myths about lactic acid and oxygen debt have misdirected most fatigue research.
>
> - The cellular processes involved in fatigue overlap with those of aging.
>
> - Knowledge about the mechanisms of fatigue should be useful in preventing some tissue swelling disorders, organ failure, degenerative calcification, and other energy-related problems.
>
> ## Glossary
>
> - Uncoupling: In cellular respiration, oxidation of fuel in the mitochondrion is coupled to the phosphorylation of ADP, forming ATP. Uncouplers are chemicals that allow oxidation to proceed without producing the usual amount of ATP.
>
> - DNP: Dinitrophenol, an uncoupler that was once popular as a weight-loss drug.
>
> - NAD+ and NADH: Nicotinamide adenine dinucleotide, and its reduced form are coenzymes for many oxidation and reduction reactions in cells.
>
> - Hyperammonemia: The presence of too much ammonia in the blood.
>
> - Vicinal water: water near surfaces, especially hydrophobic surfaces, that is physically and chemically different from ordinary water.
>
> - Hydrophobic: insoluble in water, a nonpolar oil-like molecule that repels water.
>
> Unlike the somewhat technical medical concept of stress, the idea of fatigue is something everyone understands, to some extent. Hans Selye's studies of stress weren't widely accepted until about 40 years after their publication, but some of the main investigators of the fatigue phenomenon are still practically unknown in the universities, many years after they published their work.
>
> Several things have kept fatigue research from advancing, including the common feeling that fatigue is already sufficiently understood, and that it is somehow trivial, compared to problems such as growth, reproduction, and disease.
>
> Fatigue is usually described as decreased responsiveness resulting from over-exertion: For example, a muscle's decreased strength or speed of contraction, or a nerve's decreased speed of conduction, or a sense organ's decreased ability to detect or to discriminate. Another meaning of fatigue, a decreased resistance or strength, can be applied to materials, as well as to some biological functions, for example when fatigue leads to sickness or infections.

### Source 8 — Diabetes II and How to Restore and Protect Nerves KMUD 2014

Ray Peat · Interview · 2014 · https://www.youtube.com/watch?v=Lj4ewp2YH1k

> **Ray Peat:** Yeah, actually. The uncouplers, when it’s a mild degree of uncoupling, it prevents some of the stray free radical products that happens in the more relaxed, lower intensity mitochondrion. So, they know that you reduce free radical damage a little by increasing uncoupling. But another substance which uncouples mitochondria also lowers ATP a little bit and greatly protects the mitochondrion from free radicals, that’s fructose! Fructose absorbs excess phosphate ions (probably that’s related to why it lowers the ATP). But the absorption of the phosphate ions by fructose is, in a way, a direct defensive system of the oxidative system: because the pyruvate dehydrogenase enzyme ,which is suppressed in cancer, is why dichloroacetate is gaining so much interest, because it’s a chemical that reactivates pyruvate dehydrogenase and improves the cancer metabolism in a great variety of tumors. But simply lowering the free phosphate in the cell tends to reactivate this crucial enzyme at the top of the energy producing chain. And when you are supplied with aspirin, caffeine and fructose, for example, you’re not calling on FFAs. If you load up the cell with excess FFAs (for example, from some stress), the FFAs reverse all of those processes; they block pyruvate dehydrogenase by making more phosphate ions available, where the sugars instead bind them, and lower the free phosphate ions. Fatty acids increase them (the phosphate ions) and then tend to poison the crucial enzyme.

### Source 9 — Protective CO2 and aging

Ray Peat · Article · 2011 · https://raypeat.com/articles/articles/co2.shtml

> When mitochondria are “uncoupled,” they produce more carbon dioxide than normal, and the mitochondria produce fewer free radicals. Animals with uncoupled mitochondria live longer than animals with the ordinary, more efficient mitochondria, that produce more reactive oxidative fragments. One effect of the high rate of oxidation of the uncoupled mitochondria is that they can eliminate polyunsaturated fatty acids that might otherwise be integrated into tissue structures, or function as inappropriate regulatory signals.
>
> Birds have a higher metabolic rate than mammals of the same size, and live longer. Their tissues contain fewer of the highly unsaturated fatty acids. Queen bees, which live many times longer than worker bees, have mainly monounsaturated fats in their tissues, while the tissues of the short-lived worker bees, receiving a different diet, within a couple of weeks of hatching will contain highly unsaturated fats.
>
> Bats have a very high metabolic rate, and an extremely long lifespan for an animal of their size. While most animals of their small size live only a few years, many bats live a few decades. Bat caves usually have slightly more carbon dioxide than the outside atmosphere, but they usually contain a large amount of ammonia, and bats maintain a high serum level of carbon dioxide, which protects them from the otherwise toxic effects of the ammonia.
>
> The naked mole rat, another small animal with an extremely long lifespan (in captivity they have lived up to 30 years, 9 or 10 times longer than mice of the same size) has a low basal metabolic rate, but I think measurements made in laboratories might not represent their metabolic rate in their natural habitat. They live in burrows that are kept closed, so the percentage of oxygen is lower than in the outside air, and the percentage of carbon dioxide ranges from 0.2% to 5% (atmospheric CO2 is about 0.038). The temperature and humidity in their burrows can be extremely high, and to be very meaningful their metabolic rate would have to be measured when their body temperature is raised by the heat in the burrow.
>
> When they have been studied in Europe and the US, there has been no investigation of the effect of altitude on their metabolism, and these animals are native to the high plains of Kenya and Ethiopia, where the low atmospheric pressure would be likely to increase the level of carbon dioxide in their tissues.
>
> Consequently, I doubt that the longevity seen in laboratory situations accurately reflects the longevity of the animals in their normal habitat.

### Source 10 — Salt, energy, metabolic rate, and longevity

Ray Peat · Article · 2007 · https://raypeat.com/articles/articles/salt.shtml

> The mitochondria of these animals are “uncoupled,” that is, their use of oxygen isn’t directly proportional to the production of ATP.
>
> This means that they are producing more carbon dioxide without necessarily producing more ATP, and that even at rest they are using a considerable amount of energy.
>
> One important function of carbon dioxide is to regulate the movement of positively charged alkali metal ions, such as sodium and calcium.
>
> When too much calcium enters a cell it activates many enzymes, prevents muscle and nerve cells from relaxing, and ultimately kills the cell.
>
> The constant formation of acidic carbon dioxide in the cell allows the cell to remove calcium, along with the small amount of sodium which is constantly entering the cell.
>
> When there is adequate sodium in the extracellular fluid, the continuous inward movement of sodium ions into the resting cell activates an enzyme, sodium-potassium ATPase, causing ATP to break down into ADP and phosphate, which stimulates the consumption of fuel and oxygen to maintain an adequate level of ATP.
>
> Increasing the concentration of sodium increases the energy consumption and carbon dioxide production of the cell.
>
> The sodium, by increasing carbon dioxide production, protects against the excitatory, toxic effects of the intracellular calcium.
>
> Hypertonic solutions, containing more than the normal concentration of sodium (from about twice normal to 8 or 10 times normal) are being used to rescuscitate people and animals after injury.
>
> Rather than just increasing blood volume to restore circulation, the hypertonic sodium restores cellular energy production, increasing oxygen consumption and heat production while reducing free radical production, improves the contraction and relaxation of the heart muscle, and reduces inflammation, vascular permeability, and edema.
>
> Seawater, which is hypertonic to our tissues, has often been used for treating wounds, and much more concentrated salt solutions have been found effective for accelerating wound healing (Mangete, et al., 1993).
>
> There have been several publications suggesting that increasing the amount of salt in the diet might cause stomach cancer, because countries such as Japan with a high salt intake have a high incidence of stomach cancer.
>
> Studies in which animals were fed popular Japanese foods--” salted cuttlefish guts, broiled, salted, dried sardines, pickled radish, and soy sauce “--besides a chemical carcinogen, showed that the Japanese foods increased the number of tumors.

### Source 11 — Mitochondria, Immunity, and Natural Resistance - Ask Your Herb Doctor - May 2021

Ray Peat · Interview · May 20, 2021

> ## Mitochondrial Oxidation and Plant Pigments
>
> **Andrew Murray:** So this is in the presence of these quinones?
>
> **Ray Peat:** Yeah. This particular chemical, dinitrophenol, uses the nitro group, which is actually more toxic than the system the body uses—much riskier. A lot of people kill themselves trying to use that chemical for weight loss. But it illustrates the principle that when you run the system so it oxidizes more thoroughly, it does something to the immune system that resists both infectious organisms like bacteria. One of the changes that happens when you uncouple the cell and increase mitochondrial oxidation is that iron becomes safely put into a storage form, the ferric oxidized form. The opposite of that process happens when the cell has some obstruction to oxygen use. Many toxins and microorganisms can interfere with the use of oxygen. In that case, the iron is reduced electronically, goes into the toxic ferrous form, which creates very powerful free radical forms of oxygen—hydroxyl radical—which then damages everything in the cell. So protectively, the cell has this basic mechanism of increasing fever, for example, which will increase body temperature and oxidation by a natural form of uncoupling.

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